The Hornady Custom Grade New Dimension Taper Crimp Die is a great addition to your Hornady die set. The Taper Crimp Die is specifically designed to improve the feeding reliability in your semi-automatic handgun or rifle. The die is designed to remove the flare from the case mouth to promote smooth feeding, while maintaining a sharp edge for proper head spacing. Die comes with Hornady Sure-Loc die locking ring. Shellholder sold separately.